1. Results of treatment and termination of the diet in phenylketonuria (PKU);Kang;Pediatrics,1970
2. National Institute of Health, October 16-18, 2000. Consensus development conference statement. Phenylketonuria: Screening and management. http://www.nichd.nih.gov/publications/pubs/pku/sub3.cfm. Accessed May 19, 2015.
3. US Department of Agriculture, Agricultural Research Service, 2014. USDA National Nutrient Database for Standard Reference, release 27. Nutrient Data Laboratory website. http://www.ars.usda.gov/ba/bhnrc/ndl. Accessed May 19, 2015.
4. An approximate inverse recipe method with application to automatic food analysis;Kim,2014
5. Kim J, Boutin M. A list of phenylalanine to protein ratios for common foods. ECE Technical Reports. 2014; Paper 456. http://docs.lib.purdue.edu/ecetr/456. Accessed May 19, 2015.